Grease
a 2-quart square baking dish. Arrange potatoes evenly
in the bottom of the dish. Sprinkle with cheese, ham and
green onion. In a medium mixing bowl combine eggs, milk,
pepper and salt. Pour egg mixture over potato mixture
in dish. This dish may be covered and refrigerated at
this point for several hours or overnight. Bake uncovered
at 350 degrees for 40-45 minutes (55-60 minutes if made
ahead and chilled) or until center appears set. Let stand
for 5 minutes before serving. Serves 6.